Loop Spacer Radial Grooves Adhesive Distribution
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Solution Overview
Problem
Existing methods for fixing a disk-like spacer to core members result in thick adhesive layers, leading to variations in inductance due to manufacturing conditions and temperature changes, as the adhesive is primarily extruded to the outer periphery, causing instability.
Innovation Solution
A loop-shaped spacer with radial communication grooves on its surfaces allows adhesive to be extruded to both inner and outer peripheries and into grooves, forming a thin, uniform adhesive layer between the spacer and core member, reducing inductance variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesive is applied to fix the spacer to the core member, then the spacer is secured to the core member, but the adhesive layer becomes thick and causes variations in inductance
Solution Approach 1:
The spacer surface is divided into grooved portions and flat portions. The grooved portions allow adhesive to be distributed to both inner and outer peripheries, while the flat portions provide stable adhesion areas. This local differentiation of surface structure ensures uniform adhesive layer thickness without compromising bond strength.
2Ease of manufacture
If adhesive is extruded to the outer periphery only, then the spacer is fixed to the core member, but the adhesive layer thickness varies with manufacturing conditions and temperature
Solution Approach 1:
The spacer surface is segmented into multiple grooved portions that extend radially from the inner periphery to the outer periphery. This segmentation creates multiple adhesive distribution channels, ensuring that adhesive reaches both inner and outer regions uniformly. The result is consistent adhesive layer thickness that maintains inductance stability under varying manufacturing conditions and temperature.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration ensures a consistent adhesive layer thickness, minimizing inductance variations across different manufacturing conditions and temperature changes, while enhancing adhesion strength and reducing spacer removability under stress.
Implementation Method 1
At least the flat surface of the spacer is adhered to the core member via an adhesive layer made of an adhesive
Data Source
AI summary
Disclosed herein is a spacer fixing structure including a core member constituting a core to be wound with a coil; and a plate spacer fixed to the core member. The spacer has a loop shape. A communication groove is formed in at least one surface of front and back surfaces of the spacer, and extends radially to communicate with inner and outer peripheries of the spacer. A region of the at least one surface of the spacer other than a grooved portion is left as a flat surface. At least the flat surface of the spacer is adhered to the core member via an adhesive layer made of an adhesive.